Realistic PRO-2020 - Internal Circuit Analysis; Waveforms and Timing Charts

RESET TIMING (lC-1)
5V
OV~
5V I
I Ir--
OV~
I I
I I
f.-;.-2
ms
----t
Figure1
NaTE :
Pin31 of IC·'
isthe RESETterminalwhich
functionsatLlevel. ItrevertstoH level
2msafterPin42VDD.
CPU CLOCK OSCILLATION WAVEFORM (JC-1)
4V \fW\/\fvi
I I
DV I I
1 I
~
2 .5~s
Figure2
IC-3 INPUT/OUTPUT WAVEFORM
NaTE :
This is the basic waveform of CPU (lC -1).
Ceramic
ResonatorIX -2)
generate
s400 kl-iz for about ZBus
:~=~===========lrrnnJ
~1 : I L
ov I : :
~s :
I: :1
Figure3
NaTE:
Waveform at Pin No. 5 is CPU ncn
interruptsignal.Musthaveabovewaveform
ortheCPU program malfunctions .